Concrete pump truck and boom device thereof

Abstract

The invention discloses a boom device of a concrete pump truck, comprising multi-section booms which are mutually hinged. Any one boom rotates relative to adjacent booms under the action of a drive part. The boom device also comprises at least a short arm (1) which is hinged at the tail end of the last boom by a first hinged shaft (2). A first power part is installed between the short arm (1) and the last boom. The short arm (1) rotates around the first hinged shaft (2) relative to the last boom under the action of the first power part, so that when folded, the short arm (1) is arranged below the last boom, and the included angle formed by the axis of the short arm (1) and the vertical plane is not more than 45 degrees. Therefore, the height and the length of the folded boom device are effectively reduced. The invention also discloses a concrete pump truck utilizing the boom device.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a boom device for a concrete pump truck. The present invention also relates to a concrete pump truck comprising the above boom device. Background technique [0002] With the rapid development of my country's economic construction, the market demand for construction machinery, especially concrete pump trucks, is increasing. [0003] During the working process of the concrete pump truck, the concrete needs to be transported to the designated position through the delivery pipe fixed on the arm frame, and as the delivery position changes, the arm frame needs to drive the delivery tube to realize the actions of unfolding, retracting and rotating, so , The boom in the concrete pumping equipment is generally multi-section, and each section of the boom can be folded. [0004] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of a typical conc...

AI Technical Summary

Problems solved by technology

At present, the folding method of the boom is usually R-type, RZ-type or Z-type, etc., because the traffic regulations have restrictions on the length and height of the concrete pump truck, the above-mentioned various folding methods make the boom more difficult to fold. Afterwards, it has a long transport length and a high transport height, which limits the further increase of the total length of the boom

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